Heating unit



Oct. 14, 1941. 1-. TURNBULL 2,259,187

HEATING UNIT Filed Noir. 2, 1938 INVENTOR. JUHN T. TUENELIL L- ATTORN Patented Oct. 14, 1941 UNITED STAT ES "PATENT OFFICE HEATING UNIT' ions '1. Turnbull, Detroit Mich. ApniicationNovcmber 2, 1938, Serial No.- 238,465 4 Claims. ((31. 126 -110 My invention relates to a new and useful im provement ina heating unit adapted for use with combustible fuel of fluidnature such as gas or oil. The heating unit is utilized for the purposes of heating a current of air and is especially adapted for use in heating houses, apartments, and the like where warm air heating is resorted to.

It is an object of the present invention to provide a heating unit having a combustion chamber communicating with a plurality of passageways through which the combusted gases pass, said construction being enclosed in a housing through which air may be directed for the purpose of heating the same.

It is another object of the present invention to provide a heating unit of this class having a combustion chamber separated by a flue construction embodying a plurality of passages through which combusted gases may pass from a transversely extended outlet header. I

Another object of the invention is the provision in a warm air heating unit of this class of a combustion apparatus enclosed in a housing so arranged and constructed that the combusted gases in passing to the outlet flue travel toward the air which is being heated.

Another object of the invention is the provision in a heating unit of this class of a combustion chamber communicating with an outlet apparatus'having a plurality of passages formed therein inclined to the interior and communicating adjacent their ends with a transversely extending outlet flue, said outlet flue being projectible through opposite sidesof an enclosing housing.

Another object of the invention is the provision in a heating unit of this class of a combustion chamber extended transversely of a plurality of conduits through which the combusted gases may pass into a transversely extended outlet flue.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanying drawing which forms a part of this specification, and in which,

Fig. 1 is a top plan View of the invention with the upper wall or cover removed.

Fig. 2 is a sectional view taken on line 22 of Fig. 1, slightly enlarged and with parts broken away.

Fig. 3 is a sectional view taken on line 3--3 of Fig. 1, slightly enlarged.

Fig. is a sectional view taken on line 4-4 of Fig. l, slightly enlarged.

As shown in the drawing; I provided an enclosinghousingof which I have shown the side walls 1 and 8'; the end wall 9, the bottom It, the tophaving been-removed in Fig. l and the housing having been broken away below the top in the other views. Mounted in the enclosing hous-' ing is a combustion chamber l3 which extends transversely thereof, adjacent oneend. One of the side walls of the combustion chamber is angularly turned to form the bottom M of a conductor for conducting the combusted gases to the outlet; This conductor is providedwith' the side walls 95 and I6 and a top wall H which is formed sinuous, to provide the channel forming members H" having passage-waysor channels I8 interiorly thereof so" that the combusted gases travel through the conductor and also through the conducting channels or passage-ways thus provided. The conductor is in' communication adjacent one, end, by means of the pipe IS, with a cross head or manifold 28; which, as shown in ig 2,. is substantially diamond-shaped in cross section. Mounted on opposite ends of; this mani fold or cross-head 20 is a flangeZ i and the burnt gases may be conducted from the crosshead or manifold from, either end. by mounting thereon a. conduit 22 having a flange 23 which may bebolted or otherwise secured to the flange 2|. At the opposite end of the-manifold is a disk or cover 24 mounted on the flange 2!. Exterior of the enclosing housing I provide ablower 25 operated by a motor 26 whereby an induced draft is set up in the conductor, the manifold and the flue 22, for facilitating the travel of the burnt gases therethrough. It is believed obvious that the communication to the manifold or cross-head may be made at any desirable point and that any suitable means may be used for inducing a draft through the conductor, or a natural draft resortedv to.

Positioned in the combustion chamber and extending longitudinally thereof 1 provide a pair of spaced burners 21 and 28 into each of which a gas delivery pipe 29 may discharge the fuel. Each burner is provided with a partition 3| having openings 32 formed therein, so that the fuel will pass from the chamber 33 into the chamber 34 from which it may pass through the openings 35 where it is burned, the fuel being lighted by the pilot pipe 38 which extends between these burners. As shown in Fig. 1, the burner enclosing housing is extended as at 36 and 31 on opposite sides of the conductor. In th event it is desired to dispense with the pilot light and use a thermostatic tube for controlling electrical ignition, the control tube may be mounted in the retaining housing 38. Mounted on the end of the conductor, is a reservoir 39 in which may be positioned water for humidifying air passing over the same. An air conduit 39 is attached to one end of the enclosing housing andat the opposite end of the housing air may enter the conduit 40 and pass through the filter members 4|. The travel of this air is effected by the blowers 42 and 43 which are operated by the electric motor 44 so that the air travels across the conductor of burned gases. It will be noted that the burned gases travel from the right to the left,

shown in Fig. 1, and that the air to be heated,

travels from the left to the right, passing over and around the conductor and flowing into the channels 45. In order that the cross-head or manifold 20 may form the least possible interferences with thetravel of the air, the conductor inclines from the burner toward the air inlet and is supported by suitable brackets 46. Thus, I have provided a counter-flow system in which the air first enters the outlet and then travels over th hot gas conductor toward the combustion chamber. Experience has shown that this is a very efficient form of installation. Also by having the burners extended transversely of the enclosing housing which may be termed an air chamber, a compact and economical structure is provided.

The air for assisting combustion of fuel or gas led into the burners may enter along-side of the pipes which deliver the fuel, but I have also provided openings 49, 50, and 5| through which air may enter into the combustion chamber l3 through the space 52 extended on the outside of the burners and into the space 53 between the burners.

Extending transversely of the conductor and adjacent the rear end is a partition 58 which terminates inwardly from the side walls l5 and I6, a clearly shown in Fig. 3, so that as the combusted gases are drawn toward the outlet flue 19, they are deflected by the partition 58 which serves as a baflle.

While I have illustrated and described the preferred form of construction, I do not wish to limit myself to th precise details of structure shown, but desire to avail myself of such variations and modifications as may come within the scope of the appended claims.

What I claim as new is:

1. In a heating unit of the class described: an air chamber through which air may be delivered, said chamber having oppositely disposed side walls; a combustion chamber positioned within and extended transversely of said air chamber adjacent one end, there being formed in each of said side walls, between said combustion chamber and the opposite end of said air chamber, an opening; a conductor in said air chamber for conducting exhaust gases from said combustion chamber; a hollow manifold communicating with said conductorand extended transversely of said air chamber; and means for mounting said manifold in registration at its opposite ends with said openings.

2. In a heating unit of the class described; an air chamber through which air may be delivered,

said chamber having oppositely disposed side' walls; a combustion chamber positioned within and extended transversely of said air chamber adjacent one end, there being formed in each of said side walls, between said combustion chamber and the opposite end of said air chamber, an opening; a conductor in said air chamber for conducting exhaust gases from said combustion chamber; a hollow manifold communicating with said conductor and extended transversely of said air chamber; means for mounting said manifold in registration at its opposite ends with said openings; a closure for one of said openings;

and a conduit communicating through the other of said openings with said manifold for conducting combusted gases therefrom.

3. In a heating unit of the class described: an air chamber through which air may be delivered for being heated, said air chamber having 0ppositely disposed side walls; a combustion chamber positioned within said air chamber adjacent one end; a conductor in said air chamber communicating with said combustion chamber for conducting combusted gases therefrom, there being an opening formed in each of said side walls between said combustion chamber and the opposite end of said air chamber, said openings being in registration with each other; a hollow manifold positioned within said air chamber and extended transversely thereof; means for mounting said manifold on said side walls in registration at its opposite ends with said openings; a closure for one of said openings; a conduit communicating through the other of said openings with said manifold for conducting combusted gases exterior of said air chamber; and draftinducing means communicating with said conduit exterior of said air chamber for effecting a travel of combusted gases through said conduit.

4. In a heating unit of the class described, an air chamber through which air may be delivered to be heated, said air chamber having oppositely disposed side walls; a combustion chamber positioned within said air chamber adjacent to one end; an elongated conductor in said chamber communicating with said combustion chamber for conducting combusting gases therefrom, and having a corrugated top providing a plurality of longitudinally-extending spaced conducting passages, there being an opening forming in each of said side walls between said combustion chamber and the opposite end of said air chamber, said openings being in registration with each other; a hollow manifold positioned within said air chamber and extending transversely thereof and overlying one end of said conductor in elevated relation thereto; means for mounting said manifold in registration at its-opposite ends with said openings; means for closing one of said openings; a conduit communication through the other of said openings with said manifold for conductin combusted gases therefrom; and a pipe connecting said manifold, intermediate its ends, in communication with said conductor.

JOHN T. TURN'BULL. 

